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Naddik [55]
4 years ago
10

Which trigonometric expression has the same value as sin 38 degrees?A- tan 38B cos 38 C tan 52 D cos 52

Mathematics
1 answer:
allochka39001 [22]4 years ago
5 0
Cos(52)

The rule is

Sin(A) = Cos(90-A)
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What is the perimeter of the building foundation uncovered by the archaeologists?
ss7ja [257]

Answer:

Wall of Jericho

Step-by-step explanation:

The Wall of Jericho was a Pre-Pottery Neolithic A (PPNA) defensive or flood protection wall suggested to date to approximately 8000 BC.[1] If interpreted as an "urban fortification", the Wall of Jericho is the oldest city wall discovered by archaeologists anywhere in the world.[2] It is built of undressed stones and is located at the archaeological mound known as Tell es-Sultan, in the city of Jericho on the West Bank.

The topic of this article is the unique Neolithic-age stone wall, the earliest one of its kind. Other walls, such as contemporary house walls, or later, Bronze and Iron Age city walls, are only mentioned for the sake of context.

5 0
4 years ago
Please Help! Simple Geometry!
marta [7]

Answer:

A     32.1

Step-by-step explanation:

Given two points (x_{1} ,y_{1} ) and (x_{2} ,y_{2}))

distance between to points = d = \sqrt{(x_{2} - x_{1} )^{2} + (y_{2} - y_{1} )^{2} }

Now B is (-4,5) and A is (2,0)

So AB = \sqrt{(-4-2)^{2} +(5-0)^{2} }  = \sqrt{36 + 25} = \sqrt{61\\} = 7.810...

C is (4,10)

So BC = \sqrt{(-4-4)^{2} +(5-10)^{2} } =\sqrt{64 + 25) } =\sqrt{89} =9.433...

D is (8,7)

So CD = \sqrt{(4-8)^{2} +(10-7)^{2} } =\sqrt{16 + 9} = \sqrt{25} = 5

E is (4,5)

So DE = \sqrt{(8-4)^{2} + (7-5)^{2} }  = \sqrt{16 + 4}  = \sqrt{20}  =  4.472...

and AE = \sqrt{(4-2)^2 + (5-0)^2} =\sqrt{4+25}  = \sqrt{29} = 5.385...

Perimeter = 7.810 + 9.433 + 5 + 4.472 + 5.385 = 32.1

7 0
3 years ago
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slega [8]

Answer:

Check the explanation

Step-by-step explanation:

The overall reliability of the system provided in design A = 89.13 %

Product design B has higher reliability than design A.

Overall reliability of system provided in design B = 89.85 %.

Kindly check the attached image below to see the step by step explanation to the question above.

4 0
4 years ago
3x+7=8x+7<br><br> a. infinite solutions<br> b. one solution<br> c. no solution
kykrilka [37]

Answer:

The above has one solution

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